Remove some redundant virtual specifiers on overriden functions.

llvm-svn: 222024
diff --git a/clang/lib/CodeGen/MicrosoftCXXABI.cpp b/clang/lib/CodeGen/MicrosoftCXXABI.cpp
index 5bdda98..6da8d8c 100644
--- a/clang/lib/CodeGen/MicrosoftCXXABI.cpp
+++ b/clang/lib/CodeGen/MicrosoftCXXABI.cpp
@@ -507,7 +507,7 @@
     return RD->hasAttr<MSInheritanceAttr>();
   }
 
-  virtual bool isTypeInfoCalculable(QualType Ty) const override {
+  bool isTypeInfoCalculable(QualType Ty) const override {
     if (!CGCXXABI::isTypeInfoCalculable(Ty))
       return false;
     if (const auto *MPT = Ty->getAs<MemberPointerType>()) {